Intelligent Process Cooling

Closed loop adiabatic liquid cooler

EDKEcodry

PROFILE The Ecodrygel EDK employs an innovative adiabatic

system that allows the cooler to operate in any kind

of environmental condition making it a valid alternative

to traditional cooling systems (chillers, evaporative cooling

towers, natural sources etc.) with remarkable savings

of electricity and water and the greatest respect

for the environment.

OPERATIONAL ADVANTAGES“Clean” Closed-Loop function, minimal operating

costs, quick and simple maintenance, modular

design, parallel (P) and serial (S) configurations,

and glycol-free self-draining models.

OPERATIONAL SAVINGSWater Savings

The EDK Cooler operates, for most of the year, without

consuming additional water and only during the hottest

days does it automatically activate the adiabatic system

in order to pre-cool the

incoming air. This system

allows a minimum quantity

of water evaporation without any direct contact with

the finned, coil pack thus eliminating any risk of calcium

deposits at the cooler. The EDK features Frigel’s worldwide

patented, “Adiabatic Chamber”, an innovative geometry

of humidifiers guaranteeing high relative humidity of the

air crossing the cooling coils, thus MAXIMIZING THE

EFFICIENCY of the cooler.

Power savings

The EDK Features brushless fan motors with speed controls

that offer outstanding

reduction in noise levels,

increased reliability and

longer life, and REDUCE energy consumption by more

than a third over traditional step or triac controls.

AC MOTOR EC BRUSHLESS

-41%

OPERATING EXPENSES

A Finned Coil Heat Exchanger cools the water flowing

through the coil by simple ambient airflow across the

coils, produced by special brushless fans (23,000 m3/h -

13,600 cfm per fan).

As the ambient air temperature increases, the Adiabatic

Chamber, Frigel’s international patent, activates and

cools the air by Evaporation.

The hot, dry air passing through the Adiabatic Chamber

is humidified and saturated by misted water sprayed

inside the Chamber, reducing its temperature to within

the Wet Bulb range.

There are two great advantages of the Adiabatic

Chamber:

It is the most efficient system to increase the relative

humidity of air

It prevents any water from escaping the Chamber,

thus eliminating any risk of scaling on the coil or creating

dangerous water drifts - potentially contaminated by

bacteria. In this way, the coil is kept completely dry and

free from impurities, thereby maintaining its efficiency.

The quantity of water

consumed is controlled

by a microprocessor.

Water is nebulized at a

rate up to 1,5 liters/min -

0,4 gallons/min of water

per fan guaranteeing total

evaporation within the air

flow before reaching the

finned coil pack.

The Adiabatic System cycles on and off automatically,

via a microprocessor in the PMR Control Panel.

This system guarantees leaving water temperatures

between 35°C / 95°F throughout the year in any climate.

WORKING PRINCIPLE

No bacterial contamination of water (i.e. Legionella)

Water Temperature in Main Cooling Ring

Operations in Adiabatic Mode

HEATEXCHANGER

AIR OUTLET

COOLED AIRNO WATER

AIR INLET

AIR

INLE

T

AIR

INLET

ADIABATICCHAMBER

DROPLET SEPARATORHUMIDIFYING AND

PATENTED

Standard version with glycol “S” and “P” models:

EDK can be provided in either the S (serial) or P (parallel)

version, depending on operating conditions and

the ∆T required.

Self-draining version without glycol model “D”

and “DS”:

When the unit is off and/or during power black-outs,

the entire contents of the coil and pipes empty

automatically through simple force of gravity, without

valves or servo controls, making this system the most

reliable.

The “D” and “DS” models function simply with water,

without requiring glycol, even when the ambient

temperatures reach the freezing point, with the following

advantages:

- Respect for the environment;

- Greater cooling capacity, since anti-freeze lowers

the thermal exchange coefficient;

- Use where anti-freeze additives are not allowed.

The choice between “D” and “DS” depends upon the

weather ambient conditions of the location.

MODELS

PMR

GPP

GPS

FILTER

EDK EDK

GPR

GPP

GPS

FILTER

PMR

TO PROCESS

FROM PROCESS

TO PROCESS

FROM PROCESS

WITH GLYCOL SELF-DRAINING WITHOUT GLYCOL

Full-Wet version for hot/desert climate:

allows substantial savings in water, obtained by adding

a Kit Full-Wet (KFW) and includes tank and pump that

allows the recovery and reuse of not evaporated water.

Dry version:

A Dry version is also available without adiabatic chamber

to achieve free-cooling of refrigeration systems with

central chiller.

PMR

GPP

GPS

FILTER

EDK EDK

GPR

GPP

GPS

FILTER

PMR

TO PROCESS

FROM PROCESS

TO PROCESS

FROM PROCESS

DIE-CAST ALUMINUM axial fans with brushless motors and speed controls, protected against over or under voltage, overheating, overloading and lack of phase.

ELECTRICAL PANEL with European standard (n°60204/1) and UL listing by request. Each machine is designed to be easily connected to the remote control panel. Standard supply voltages: 400V/3/50 Hz and 460V/3/60Hz.

High-efficiency ADIABATIC CHAMBER (Frigel PCT Patent No. WO 2007/015281) is designed to guarantee maximum humidification of inlet air at the coils and minimal water usage with no drifts.

FRAME AND HULL made entirely from stainless materials (stainless steel/aluminum). DELIVERY AND RETURN STAINLESS STEEL MANIFOLDS with Victaulic flanged connections, for quick, easyinstallation and expansion.

ALUMINUM FINS COPPER PIPE COILS with large pitch and straight foils (not corrugated) to insure a free flow of air preventing dust and dirt from accumulating on the coils.

Intelligent Process Cooling

TECHNICAL FEATURES

CONTROL PANEL (PMR-G)The input screen and remote control panel, with highly visible temperature display, wide alphanumeric screen, shows all working parameters and eventual alarm signals and diagnostics (see the “PMR” brochure for more information).

Converters for 220V 50Hz / 60 Hz

Visual Alarm

Aquagel Pumping Stations: modular pumping sets and stainless steel tanks available for “turn-key” installations (see the “Aquagel” brochure for more information).

ACCESSORIES AND OPTIONALS

www.frigel.com

Frigel North Italy branchE-mail: sales.italia@frigel.it

Frigel Asia-Pacific ltd.E-mail: fapsales@frigel.it

Head Quarters: Frigel Firenze SpAVia Pisana, 31650018 Scandicci (Italy)Ph +39 (055) 722-0920Fax +39 (055) 731-1271E-mail: sales@frigel.it

Frigel North America Inc.150 Prairie Lake Rd, Unit AEast Dundee, IL 60118 USAPh +1 (847) 540-0160Fax +1 (847) 540-0161E-mail: sales.fna@frigel.com